Searching Semantic Web Objects Based on Class Hierarchies

50 %
50 %
Information about Searching Semantic Web Objects Based on Class Hierarchies
Technology

Published on December 23, 2008

Author: gcheng

Source: slideshare.net

Description

Presentation given at LDOW2008. It describes Falcons Object Search, a keyword-based search engine for objects on the Semantic Web.

Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng , Weiyi Ge, Honghan Wu, Yuzhong Qu Institute of Web Science, School of Computer Science and Engineering Southeast University, Nanjing, China Presentation at the WWW 2008 Workshop: Linked Data on the Web (LDOW2008) http://iws.seu.edu.cn/services/falcons/

Information Islands vs. Web of Data

Information Islands vs. Web of Data

Information Islands vs. Web of Data

Motivation How to find URIs? Linked Open Data brings … Single-point retrieval system

How to find URIs?

Linked Open Data brings …

Single-point retrieval system

Demo http://iws.seu.edu.cn/services/falcons/

http://iws.seu.edu.cn/services/falcons/

Demo

Demo

Demo

Navigating Class Hierarchies for Query Restriction Filtering results Recommending subclasses

Combined Inverted Index Query: <terms, classes>

Query: <terms, classes>

Provenance of Typing Information H euristics Dereference document Namespace document Documents on the same host Other documents

H euristics

Dereference document

Namespace document

Documents on the same host

Other documents

Class-inclusion Reasoning

Class-inclusion Reasoning (cont.)

Which axioms would be accepted by the reasoning engine? The authorized description of a vocabulary is allowed to reuse the classes from other vocabularies but CANNOT further constrain their meaning. Class-inclusion Reasoning (cont.)

Which axioms would be accepted by the reasoning engine?

The authorized description of a vocabulary is allowed to reuse the classes from other vocabularies but CANNOT further constrain their meaning.

Recommending Subclasses If a subclass covers more results, it will be more likely to be recommended. Algorithm Iterate over the first 1,000 results to collect classes. Rank classes. Select top K classes, s.t.: Each selected class must be a strict subclass of a current class. The class inclusion relation does NOT hold between any pair of the selected classes.

If a subclass covers more results, it will be more likely to be recommended.

Algorithm

Iterate over the first 1,000 results to collect classes.

Rank classes.

Select top K classes, s.t.:

Each selected class must be a strict subclass of a current class.

The class inclusion relation does NOT hold between any pair of the selected classes.

Example K = 2 × × × Current class √ √

K = 2

Summarizing SW Objects

Expanding textual description of SW objects Mapping Terms to SW Objects

Expanding textual description of SW objects

Thank You Welcome to Nanjing!

Welcome to Nanjing!

 

Architecture

RDF Sentence

Crawler Seed document URLs PTSW, DBpedia … Swoogle, Google … Parse RDF documents and dereference all the mentioned URIs. …

Seed document URLs

PTSW, DBpedia …

Swoogle, Google …

Parse RDF documents and dereference all the mentioned URIs.



Add a comment

Related presentations

Presentación que realice en el Evento Nacional de Gobierno Abierto, realizado los ...

In this presentation we will describe our experience developing with a highly dyna...

Presentation to the LITA Forum 7th November 2014 Albuquerque, NM

Un recorrido por los cambios que nos generará el wearabletech en el futuro

Um paralelo entre as novidades & mercado em Wearable Computing e Tecnologias Assis...

Microsoft finally joins the smartwatch and fitness tracker game by introducing the...

Related pages

Searching Semantic Web Objects Based on Class Hierarchies

Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng gcheng@seu.edu.cn Weiyi Ge wyge@seu.edu.cn Honghan Wu hhwu@seu.edu.cn Yuzhong Qu
Read more

Searching Semantic Web Objects Based on Class Hierarchies ...

Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng gcheng@seu.edu.cn Honghan Wu hhwu@seu.edu.cn Weiyi Ge wyge@seu.edu.cn Yuzhong Qu yzqu@ ...
Read more

Searching Semantic Web Objects Based on Class Hierarchies

Institute of Web Science iws.seu.edu.cn Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng, Weiyi Ge, Honghan Wu, Yuzhong Qu Institute of ...
Read more

Searching semantic web objects based on class hierarchies ...

BibTeX @INPROCEEDINGS{Cheng08searchingsemantic, author = {Gong Cheng and Honghan Wu and Weiyi Ge and Yuzhong Qu}, title = {Searching semantic web objects ...
Read more

Searching Semantic Web Objects Based on Class Hierarchies ...

SearchingSemantic Web Objects Based ClassHierarchies Gong Cheng gcheng@seu.edu.cn Weiyi Ge wyge@seu.edu.cn Honghan Wu hhwu@seu.edu.cn Yuzhong Qu yzqu@seu ...
Read more

Searching Semantic Web objects based on class hierarchies

Page 1. Searching Semantic Web Objects Based on Class Hierarchies Gong Cheng gcheng@seu.edu.cn Honghan Wu hhwu@seu.edu.cn Institute of Web Science, School ...
Read more

Searching Semantic Web Objects Based on Class Hierarchies ...

Searching Semantic Web Objects Based on Class Hierarchies. 上次更新: 2015-06-25. URI: http://ws.nju.edu.cn/publications/cgwq08: 作者: ...
Read more

TaskForces/CommunityProjects/LinkingOpenData ...

... search interface based ... Semantic Web clients and ... Honghan Wu and Yuzhong Qu: Searching Semantic Web Objects Based on Class Hierarchies, ...
Read more

PowerPoint Presentation - Inspiring Innovation

Research Problems in Semantic Web ... keyword based queries on : Objects ... Searching Semantic Web Objects Based on Class ...
Read more